@article{8dfe98df2a3e46099a3679d07ea039c4,
title = "Carbonate Coprecipitation for Cd and Zn Treatment and Evaluation of Heavy Metal Stability Under Acidic Conditions",
abstract = "Mining wastes or combustion ash are materials of high carbon sequestration potential but are also known for their toxicity in terms of heavy metal content. To utilize such waste materials for engineered carbon mineralization purposes, there is a need to investigate the fate and mobility of toxic metals. This is a study of the coprecipitation of metals with calcium carbonate for environmental heavy metal mitigation. The study also examines the stability of precipitated phases under environmentally relevant acid conditions. For a wide range of cadmium (Cd) and zinc (Zn) concentrations (10 to 5000 mg/L), induced coprecipitation led to greater than 99% uptake from water. The calcium carbonate phases were found to contain amounts as high as 9.9 wt % (Cd) and 17 wt % (Zn), as determined by novel synchrotron techniques, including X-ray fluorescence element mapping and three-dimensional (3D) nanotransmission X-ray microscopy (TXM). TXM imaging revealed first-of-a-kind observations of chemical gradients and internal nanoporosity within particles. These observations provided new insights into the mechanisms leading to the retention of coprecipitated heavy metals during the dissolution of calcite in acidic (pH 4) solutions. These observations highlight the feasibility of utilizing carbonate coprecipitation as an engineered approach to the durable sequestration of toxic metals.",
keywords = "CO sequestration, X-ray computed tomography, acid leaching, cadmium, calcium carbonate, carbon mineralization, water treatment, zinc",
author = "Kim, {Julie J.} and Lee, {Sang Soo} and Paul Fenter and Myneni, {Satish C.B.} and Viktor Nikitin and Peters, {Catherine A.}",
note = "Funding Information: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by ORAU under contract number DE-SC0014664. All opinions expressed in this paper are the author′s and do not necessarily reflect the policies and views of DOE, ORAU, or ORISE. Support also came from Princeton University through the High Meadows Environmental Institute as part of the Water Grand Challenges initiative, and through a SEAS Innovation Grant from the Moore Charitable Foundation. PF and SSL were supported by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division (Geosciences subprogram) at Argonne National Laboratory. This research used beamlines 32-ID, 13-ID-E, and 11-BM of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science user facility at Argonne National Laboratory and is based on research supported by the U.S. DOE Office of Science-Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The portions of this work that were performed at GeoSoilEnviroCARS (The University of Chicago, Sector 13), Advanced Photon Source (APS), Argonne National Laboratory were supported by the National Science Foundation - Earth Sciences (EAR - 1634415) and Department of Energy- GeoSciences (DE-FG02-94ER14466). The authors acknowledge Antonio Lanzirotti and Matt Newville for their assistance in collecting the μXRF-μXRD data, as well as Stefania Gili and Yifen Tsai for collecting the ICP-MS data. Funding Information: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by ORAU under contract number DE-SC0014664. All opinions expressed in this paper are the author′s and do not necessarily reflect the policies and views of DOE, ORAU, or ORISE. Support also came from Princeton University through the High Meadows Environmental Institute as part of the Water Grand Challenges initiative, and through a SEAS Innovation Grant from the Moore Charitable Foundation. PF and SSL were supported by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division (Geosciences subprogram) at Argonne National Laboratory. This research used beamlines 32-ID, 13-ID-E, and 11-BM of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science user facility at Argonne National Laboratory and is based on research supported by the U.S. DOE Office of Science-Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The portions of this work that were performed at GeoSoilEnviroCARS (The University of Chicago, Sector 13), Advanced Photon Source (APS), Argonne National Laboratory were supported by the National Science Foundation – Earth Sciences (EAR – 1634415) and Department of Energy- GeoSciences (DE-FG02-94ER14466). The authors acknowledge Antonio Lanzirotti and Matt Newville for their assistance in collecting the μXRF-μXRD data, as well as Stefania Gili and Yifen Tsai for collecting the ICP-MS data. Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",
year = "2023",
month = feb,
day = "28",
doi = "10.1021/acs.est.2c07678",
language = "English (US)",
volume = "57",
pages = "3104--3113",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "8",
}